package com.itheima.reggie.controller;


import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.User;
import com.itheima.reggie.service.UserService;
import com.itheima.reggie.utils.ValidateCodeUtils;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@Slf4j
@RestController
@RequestMapping("/user")
public class UserController {

    @Autowired
    private UserService userService;

    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 发送短信验证码
     * @param user
     * @return
     */
    @PostMapping("/sendMsg")
    public R<String> sendMsg (User user){
        //获取手机号
        String phone = user.getPhone();

        if (StringUtils.isNotEmpty(phone)){
            //生成随机的4位验证码
            String code = ValidateCodeUtils.generateValidateCode(4).toString();
            log.info("code:{}",code);

            //利用redis缓存验证码5分钟
            redisTemplate.opsForValue().set(phone,code,5, TimeUnit.MINUTES);

            return R.success("发送短信验证码成功");
        }
            return R.error("短信发送失败");
    }

    /**
     * 手机端用户登录
     * @param map
     * @param session
     * @return
     */
    @PostMapping("/login")
    public R<User>login(@RequestBody Map map, HttpSession session){
        log.info(map.toString());

        //获取手机号
        String phone = map.get("phone").toString();
        //获取验证码
        String code = map.get("code").toString();

        //从redis中获取缓存的验证码
        Object codeInSession = redisTemplate.opsForValue().get(phone);
        //进行验证码比对
        if (codeInSession!=null && codeInSession.equals(code)){

            //如果能够比对成功,说明登录成功
            LambdaQueryWrapper<User> lqw = new LambdaQueryWrapper<>();
            lqw.eq(User::getPhone,phone);

            User user = userService.getOne(lqw);

            //判断当前手机号对应的用户是否为新用户,如果是新用户就自动完成注册
            if (user==null){
                 user = new User();
                 user.setPhone(phone);
                 user.setStatus(1);

                 userService.save(user);

            }

            session.setAttribute("user",user.getId());
            //登录成功,从redis中删除验证码
            redisTemplate.delete(phone);

            return R.success(user);
        }
        return R.error("登录失败");
    }

    /**
     * 用户退出
     * @param request
     * @return
     */
    @PostMapping("/loginout")
    public R<String> loginout (HttpServletRequest request){
        //清理session中保存的当前员工id
        request.getSession().removeAttribute("user");

        return R.success("退出成功");
    }
}

